Hi Ahmed,
obviously, 20-30 sec. pause is unacceptable. I suppose check the following: - disable swapping completely - check Java version, v8. is desirable (depending on Cassandra version) - use multiprocessor machine (it allows concurrent GC) Best regards, Vladimir Yudovin, Winguzone - Cloud Cassandra Hosting ---- On Fri, 25 Nov 2016 16:25:15 -0500 S Ahmed <sahmed1...@gmail.com> wrote ---- Hello! >From what I understand java GC pauses are pretty much a fact of life, but you >can tune the jvm to reduce the likelihood of the frequency and length of GC >pauses. When using Cassandra, how frequent or long have these pauses known to be? Even with tuning, is it safe to assume they cannot be eliminated? Would a 20-30 second pause be something out of the ordinary? Thanks.